Add README.md and CC BY 4.0 license

README.md

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+# FSYS MFL CCG Gameplay Digital
+
+A digital card game about sustainable food systems, based on the FSYS MFL (My Farming Life) CCG framework.
+
+## Development
+
+```bash
+npm install
+npm run dev
+```
+
+## Production Build
+
+```bash
+npm run build
+```
+
+The static output is in `dist/` — serve with any web server.
+
+## Docker
+
+```bash
+docker build -t fsys-mfl-ccg:latest .
+docker run -d -p 80:80 fsys-mfl-ccg:latest
+```